From: 52m37@charter.net
Date: Tue Dec 23 2003 - 21:15:19 PST
I can tell you my experience for what its worth. I had a Ser IIa Land Rover
with 4 cycl engine. I drove it about 80 miles round trip to work every day
with no additive. I burned a big hole in the #4 exhaust valve. Not sure if
it was from not using leaded gas or an additive but the key hole shaped
damage to the valve looks like it started at the end , probably from a
burned seat.
Can someone post the web site for the lead additive?
Hal
1952-M37
> From: "Paul A. Thomas" <bluewhale@jaxkneppers.com>
> Date: Mon, 22 Dec 2003 20:32:46 -0800
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Subject: Re: [MV] LEAD ADDITIVE
>
> I would like to add a question to Lances:
>
> My REO's engine probably was rebuilt at some point but is still a straight
> 6, gas fueled 127 HP engine. Based on ownership and condition I assume
> hardened valves ( seats? ) were never installed. The engine runs... what
> damage would I risk by NOT using a lead additive in the fuel? I'm curious
> as to whether the valves and seats, which would have to be replaced anyway
> with hardened units, would be the only things damaged by running it so?
>
> Would the only ( if applicable ) performance hit be less power than if I
> were to add the lead?
>
>
> Thanks
>
>
> Paul
> MVPA #24986
> '53 REO M35 Fire Conversion
> '53 Atomic Energy Commision Chevy 3/4 Ton
> www.paulathomas.com/images
>
>
> *********************************************************8
>
>
> At 07:46 PM 12/22/2003, you wrote:
>> I've got a question for our knowledgeable experts on internal
>> combustion engines. All WWII and most M-series engines prior to the
>> 1980's were made to be run on leaded gas. Since the late-80's leaded
>> gas has ceased to exist at the corner pumps.
>>
>> I have been told by local MV members that running
>> unleaded gas in older
>> engines causes serious damage to the valves, such as increased deposits,
>> excessive seat wear, and overheated valves. Thus I have been told to
>> purchase cans of Lead Substitute and add it to the tank each fill up.
>>
>> My question is: Just how serious of a problem is
>> unleaded gas to our
>> older engines ? And how much lead additive should be mixed with 20 to
>> 25 gallons of unleaded fuel ?
>>
>> LANCE MVPA 22125
>>
>>
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>
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